update-scroll-bars-for-new-window-size

Arguments:
window

This generic function is called internally when a window is
created and later whenever the interior size of the window changes or
its page size changes. An application should not call this function.
If an application defines a custom scrolling scheme, then it likely
will need to define an update-scroll-bars-for-new-window-size method
that calls
set-scroll-range
to set the scroll-bars of the window as
needed for the new window size.